The Toolkit is quite different from the other modeling tools in the
market though, as it uses a textual notation (TextUML) instead of the
conventional graphical one.

I am looking for people that see the value of the approach and would
like to contribute at some capacity. The project is in dire need of
early adopters and developers.

The intended audience of the tool is MDD practitioners using UML with
the primary purpose of code generation. That reflects in the features
(existing and planned). For instance, there is support for class and
activity modeling (structure + behavior), but there are no plans to
support things such as use cases, interactions or collaborations.